Energy from CO2 using capacitive electrodes – Theoretical outline and calculation of open circuit voltage

J.M. Par-Garcia, O. Schaetzle, P.M. Biesheuvel, H.V.M. Hamelers

Research output: Contribution to journalArticleAcademicpeer-review

26 Citations (Scopus)

Abstract

Recently, a new technology has been proposed for the utilization of energy from CO2 emissions (Hamelers et al., 2014). The principle consists of controlling the dilution process of CO2–concentrated gas (e.g., exhaust gas) into CO2–dilute gas (e.g., air) thereby extracting a fraction of the released mixing energy. In this paper, we describe the theoretical fundamentals of this technology when using a pair of charge–selective capacitive electrodes. We focus on the behavior of the chemical system consisting of CO2 gas dissolved in water or monoethanolamine solution. The maximum voltage given for the capacitive cell is theoretically calculated, based on the membrane potential. The different aspects that affect this theoretical maximum value are discussed.
Original languageEnglish
Pages (from-to)200-207
JournalJournal of Colloid and Interface Science
Volume418
DOIs
Publication statusPublished - 2014

Keywords

  • anion-exchange membranes
  • porous-electrodes
  • carbamate formation
  • aqueous-solution
  • acid anions
  • monoethanolamine
  • equilibrium
  • absorption
  • simulation
  • capture

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